kraft



M. C. SCHWEINERT AND H. P. KR AFT.

INFLATING COUPLING. APPLICATION FILED SEPT-.7. I915.

Patented May 27, 1919.

fig].

INVENTORS meys,

By AZLZLO WITNESSES:

UNITED STATES PATEnronFioE.

MAXIMILIAN CHARLES SCHWEIN'ERT, OF WEST HOZBOKEN, AND HENRY P. KRAFT, OF

- BIDG-EWOOD, NEW JERSEY.

INFLATINQ-COUPLING.

Specification of Letters Patent.

Patented May 27, 1919.

I To allwhom it may concern New Jersey,

5 connect a reservoir or close to the coupling,

.coupling. By sary only to press Be it known that we, MAXIMILIAN CHARLES SQHWEINEBT, ofWest Hoboken, in the county of Hudson and State of New Jersey, and HENRY P. KRAFT, of Ridgewood, in the countyof Bergen and State of both citizens of the United States of America, new and useful Improvements in Inflating- Couplings, of which the following is a specification. p

This invention relates to inflating devices and is particularly adapted for use in connection with pneumatic tires.

The invention is especially. what may be termed a directed to tank of compressed air with the pneumatic tire or other device to be inflated. Such tanks have heretofore been provided with a hand-operated valve or cock or with an automatic valve designed to prevent the flow of air outwardly through the coupling when the device is not in use."

The present invention'provides an improved structure of'the class which has automatic means which normally closes the pipe line from the tank or reservoir, and which is releasedor pushed out of position in the act of applying the coupling to the tire'valve.

In the pre rred form of the invention we provide a device in which an automatic valve is introduced in a line preferably and means are provided for contacting with which means when the coupling is pressed down on the top of the valve move upwardly and unseat the check valve in the this constructlon 1t 1s necesthe coupling into position when it is desired to inflate the tire and remove it when the inflating operatlon 1s finished.

Referring to the drawings which illustrate several embodiments of the invention,- Y

.Figure l is a central vertical section of the preferred form of the coupling,

being shown in its closed position.

Fi 2 is a similar section, showing the coup ing applied to a tire valve and 111 its open position.

Referring to Figs. 1 and 2 of the drawhave invented certain.

coupling adapted to the tire valve,

in place by v pling is Fig. 3 is a'similar section of a modified form.

'ter u wardly until vided with an angled portion B which serves the purpose of with a. nipple to which a rubber tube or hose pipe C is suitably attached as shown. The object of this construction is to provide a device which is short from top to bottom so that it may be readily inserted between the spokes of a wheel. 'At the bottom of a handle, and which .is formed the casing A is preferably provided a foot D which has an extension E screwing up within the casing, in which extension is outlet chamber J in its lower part in which I works a packing carrier and unseating member the stem of which projects. through an opemng or passage L into position where it can engage the valve F. The stem memher is formed with a longitudinal passage M communicatin with a lateral passage so that air may ow through it when it'engages with the packing of the valve F and moves the latter from its seat. The enlarged part of member K is provided with a perforated acking 0 designed to make a tight joint with the top 'of the valve shell as shown in Fig. 2. The member K is shown as held a screw-threaded collar P having a central opening to admit the tire- 1 valve, and guide the device when being applied to such valve. In order to prevent leakage around the carrier or member K when the valve is open I provide a packing Q, against which the shoulder R of the unseating member contacts, as shown in Fig.

2. The member K and packing hence in effect comprise a'valve adapted to close the openin L in so far as to preventflzhe passage 0 air through thelatter except that which passes through the bore M in the member K. 1

' The operation of the device will be apparent from. the foregoing. When the coupressed down on the top of the valve shell the end of the shell engages the pack-- ing 0 of the member K and presses the latit unseats the valve-F heavier'and A tight joint is thus secured with the valve interposed between the two to make a tight joint at this point.

The construction shown in Fig. 3 is similar to that shown in Figs. 1 and 2 with the exception that the hand piece is straight instead of angular. In both the constructions shown in Figs. :1 and 2 and 4 the foot D with its valve mechanism can be easily removed and replaced if worn or damaged withoutnecessitating the duplication of the more expensive hand piece. To inspect or renew the packings O Q it is only necessary to unscrew the collar P.

While We have shown in detail several forms of the invention, it Will be understood that we do not wish to be limited thereto since various changes can be made therein without departing from the invention.

What we claim is 1.- An inflating device for pneumatic tires comprising a casing formed of a handlemember having a hose nip le, and afoot projecting beyond said mem er and having an extension screwing into said member, said casing having a valve cha ber formed in the foot, a check-valve in said chamber, and v a removable top for the foot partially-closing the inner end of said chamber, whereby e reservoir passes down projecting beyond said member and having an extension screwing into said member, said casing having a valve chamber formed in the foot, a check-valve and spring in said chamber, and a screw top confining said spring and partially closing the inner end of said chamber, whereby the check-valve and spring are foot.

3. An inflating device for pneumatic tires comprising a casing formed of a handlemember having a hose nipple, and a foot projecting beyond. said member and having an extension screwing into said member, said casing having a valve chamber formed in such extension, and an outlet chamber formed in the foot, a check-valve in said valve-chamber, and a packing carrier and packing in said outlet chamber, and an annular screw-collar entering said outletchamber to confine said packing and carrier, its opening serving to receive the end of a tire-valve and guide the device thereon, and whereby the carrier and packing are accesaccessible by unscrewing said sible by unscrewing said collar.

In witness whereof, we have hereunto signed our names in the presence of two su'bscribing witnesses.

MAXIMILIAN CHARLES SCHWEINERT. HENRY P. KRAFT. Witnesses:

E. V. MYERS, FRED WHITE. 

